Ophthalmic mounting



" Ma ch 16, 1937.

G. A. ELLESTAD 2,074,084

OPHTHALMIC MOUNTING Filed Feb 1, 1955 ll l6 VI 7 FIGZ /l l2 l8 20 IO llI6 272 29 25 FIGS IE. 34 27 I6 3| i k 2-8 as 2 3O mvl srq Patented Mar.16, 1937 OPHTHALNHC MOUNTING Gerhard A. Ellestad, Rochester, N. Y.,assignor to .Bau'sch & Lomb Optical Company, Rochester, N. Y., acorporation of New York Application February 1, 1935', Serial No. 4.5321 7 Claims. (ores-47) This invention relates toophthalmic mountings andmore particularly it has reference to connecting means which are usedfor securing together the various parts of an ophthalmic mounting.

One object of my invention is to provide an improved connecting meansfor ophthalmic mounting parts. Another object is to provide lockingmeans .for detachable retaining elements on ophthalmic mountings. Afurther object is to provide a movable member which may be selectivelymoved .into or out of locking engagement with the screw on an ophthalmicmounting. A still further object is to provide an article of the typedescribed which willbe simplein structure, neat in appearanceandefiicient in operation. Stillanother object .is to provide improvedmeans for detachably securing a lensin an ophthalmic mounting. These andother objects and advantages reside in certain novel features ofconstruction, arrangement and combination of parts as will hereinafterbe more fully described and pointed out in the appended claims.

Referring to the drawing:

Fig. 1 is a front view of an ophthalmic mounting embodying my invention.

Fig. 2 is a sectional view thereof showing a tool adapted to move thelocking member.

7 Fig. 3 is a similar view of amodification.

Fig. 4 is a view of the inner face of the rear strap of same with partsin section. I

A preferred embodiment of my invention is illustrated in the drawing, asapplied to a lens mounting, wherein I9 indicates a member having thespaced front and rear straps II and I2, respectively, positioned onopposite faces of the lens I3. The member I0, having the usual shoe I4extending along the edge of the lens, is soldered to the bridge memberI5. The screw I6,

v passing through the opening H in the lens I3,

threadedly engages the rear strap I2 and thus connects the front andrear straps. The inner face of the rear strap I2 is provided with arecess I8 in which is movably mounted a fiat resilient member I9 havingan opening 29 through which the screw I6 passes. One end of theresilient member I9 is secured to the strap I2 by means of the screw 2|so that the member I9 normally occupies the full line position shown inFig. 2. With the screw I6 in place, one edge of the opening 20 of memberI9 will normally be in contact with the screw at 22 so as to lock thelatter against rotation. In order to move the member l9 out of lockingengagement with the screw, the member I9 is moved down to the dottedline position of Fig. 2 by means of a'pin 23 whichis inserted throughhole 24 in strap I2. Inthis "position of the locking member I9, screw I6passesfreely through the opening 20 so that the-screw may be readilywithdrawn or inserted 5' in the usual manner. It will thus be apparentthat the resilient member I9 provides means for locking the screw I6against rotation but that the member I9 may be selectively moved out ofengagement with the screw in order to permit a '10 free insertion orwithdrawal of the screw.

In the modification shown in Figs. 3 and 4 the rear strap I2 has formedon its inner face the recess 25. Slidably mounted within the recess 25is the locking member 26 which is retained loose- 15 ly by a screw 21cooperating with a slot 28 to permit; free sliding movement of themember 26. The member 26 is provided with an opening 29 through whichpasses the screw I6. The opening 29 has a tapered portion 39 which isadapted 20 to be forced into wedging engagement with screw I6 by slidingthe member 26 by means of a pin 23 which passes through the aperture 3|and engages the upturned part 32 on member 26. In this position, themember 26 serves as a lock to 5 prevent rotation of the screw I6. Themember 26 may be moved out of locking engagement with the screw I6 byinserting the pin 23 through aperture 33 so as to engage the upturnedpart 34 on member 26. 30

From the foregoing it will be apparent that I am able to attain theobjects of my invention and provide relatively simple, yet efiicient,connecting means for ophthalmic mountings. A mounting embodying myinvention is neat in 35 appearance as the movable locking members areconcealed. Although I have illustrated my invention as applied to meansfor mounting lenses it is obvious that it may be equally well adaptedfor locking screws which are used for other pur- 40 poses on ophthalmicmountings. Various modifications may be made without departing from thespirit of my invention.

I claim:

1. An ophthalmic mounting comprising a part, 45 a retaining elementdetachably secured to said part for holding together a plurality ofophthalmic mounting devices, a member having one end fixedly mounted onsaid part, said member having a movable part provided with an aperture50 through which said element extends, said member being resilient andconstructed so that the wall of said aperture is normally urged intolocking engagement with said element.

2. In an ophthalmic mounting, the combina- 55 tion of a strap positionedon the face of a lens having an opening, a retaining element positionedin said opening and secured directly to said strap, a locking membermovably mounted on said strap, said member having a hole within whichsaid element is positioned, and coacting locking means on said elementand on the wall of said hole, said member being adapted to beselectively moved to bring the locking means on the wall of the holeinto or out of locking engagement with the locking means on the element.

3. In an ophthalmic mounting, the combination of a strap positioned onthe surface of a lens having an opening, a retaining element positionedin said opening and secured directly to the strap, said strap having aninternal recess formed on its inner face, a locking member movablymounted within said recess, coacting locking means on said element andsaid member, said member being constructed and arranged to beselectively moved into or out of locking engagement with said element,said strap having an aperture in the wall of said recess whereby saidmember may be moved by means of a tool inserted through the aperture.

4. An ophthalmic mounting comprising a part having two spaced strapspositioned on opposite faces of a lens having an opening, a screwconmeeting said straps and positioned in said opening, one of saidstraps having a recess formed on its inner face, a member slidablymounted within said recess to move in a plane substantiallyperpendicular to the axis of the screw, said member having a slotthrough which said screw extends, and means permitting selectivemovement of said member, into or out of locking engagement with saidscrew.

5. An ophthalmic mounting comprising a strap adapted to be positioned onthe surface of a lens having an opening, a screw passing through saidhaving a strap adapted to be positioned on the surface of a lens havingan opening, the inner side of said strap having a depression facing thesurface of the lens, a locking member movably mounted within saiddepression, said member having an aperture, a retaining element passingthrough said aperture and positioned in said opening and secureddirectly to said strap, said member being constructed and. arranged tobe selectively moved into or out of locking engagement with saidelement, the movement of said member being confined entirely, to saiddepression, said strap having a relatively small aperture leading intosaid depression whereby a tool may be inserted in said depression formoving said member.

7. An ophthalmic mounting comprising a part having a strap adapted to bepositioned on the surface of a lens having an opening, the inner side ofsaid strap having a recess, a retaining element passing through saidopening and recess and secured to the strap, a resilient member havingone end secured to the strap and the free end movable within saidrecess, said member having a part normally urged into'locking engagementwith said element by the resilience of said member. I

GERHARD A. ELLESTAD.

